Maximizing Efficiency and Safety of WHR Systems for Small Capacity Open Cycle Gas Turbines Power Plants (up to 40MWe)
(Room Garuda 12, 1st Floor)
19 Sep 18
4:30 PM
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6:00 PM
Tracks:
TRACK D - Power Plant Technologies
Two different technologies can currently be applied to close gas turbines based power generation plants: Condensing Steam Turbine systems and Organic Rankine Cycle systems. The ORC, with an intermediate loop to transfer the heat from the exhaust gases to the organic fluid, demonstrates superior flexibility and plant automation than Steam but requires flammable fluids to maximise the conversion efficiency. The Industry typically associates this item with higher operation risk and, thus, some additional costs are considered for risk mitigation systems. Steam is traditionally the technology of choice, granting both efficiency and operation safety while requiring a quasi-base load operation and higher OPEX when compared to ORC. In response to this, EXERGY developed and patented an alternative technology combining most of the advantages of Steam and ORC technologies, maximizing the efficiency and flexibility of the heat recovery system in combination with gas turbines between 5 to 40MWe, without compromising its safety. This paper presents this new technology applied to selected gas turbines available on the market, both from the technical and financial point of view.